Questions tagged [jpeg]

JPEG is an adjustable "lossy" compression method commonly used in digital photograph. The most common filename extensions for images using the JPEG format are .jpg and .jpeg. Compare to alternative image formats such as TIFF and the various RAW formats.

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360 views

.jpg photos from the external SD card of Galaxy Grand Prime + display “It appears we don't support this file format” after transferring them to my PC

My Galaxy Grand Prime + phone was running out of space so I transferred all my WhatsApp media to my SD card. After some time (a few hours I think), many of these photos and videos became unviewable. I ...
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Can I do “back conversion” of a B&W JPEG to color?

I have a black and white JPEG. It is in fact an RGB image, which means that the color is still there. And I know from past experience that when I shoot B&W with my Canon, the color image is still ...
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5answers
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How can I convert an Apple iOS HEIF image into JPEG?

How can I convert an HEIF/HEIC image into a JPEG? Maybe using ImageMagick?
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112 views

Why are thumbnails bad, when jpgs are good, with raw processed with darktable?

I'm using darktable to process my raw photos and save the final jpg's. I'm on ubuntu linux. From some of the jpg's, gthumb gets thumbnails which are far lighter than the original jpg, and the same ...
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1answer
69 views

Different image viewer shows different color (brightness?) of jpg image

I'm not sure if I should ask this question here or not. I've some images, that have a problem, as the screenshot below shows: The softwares are as following (left to right, top to bottom): [qimgv] [...
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2answers
949 views

How do I find raw files corresponding to selected JPEGS

I shoot RAW + JPEG on fujifilm cameras and 90% of the time I'm fully content with my jpeg images but a few could use some editing. To save time I would like to cull my photos into three categories: ...
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3answers
873 views

Recover broken images that are corrupt

I had some issues with my computer and sent it out for repairs to a reputable dealer. So far everything came back perfect. I sent it in to be cleaned up and to try and recover some photos that were ...
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2answers
178 views

Convert large database of mixed-format files into screen size jpegs

I am an older photographer with an ever-increasing collectiob of 20,000+ images in folders arranged by year and month. (they are currently catalogues in Lightroom and the bad, non-interesting photos ...
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1answer
95 views

Why is the night sky photo showing uneven color and strange pattern in background?

Here's straight-out-of-camera JPEG I've shot with Fujifilm XT-2 with following details: f/2.8 15 seconds ISO 3200 XF 16mm f/2.8 R WR Upon closer inspection I noticed: Left area is noisy possibly ...
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2answers
167 views

Edit in RAW not as good as the Jpeg

I take most of my pictures on mobile, and I use mostly jpeg for the convenience, but I sometimes use RAW because of annoying whites blowout, bizarre clouds or unreal colors. For instance, my sunset ...
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4answers
194 views

GIMP: Why can I set a higher quality than original image in the “Export Image as JPEG” dialog?

After having read the GIMP Export Image as JPEG section, I still have one understanding issue: Why am I able to select a higher quality value than the one from original image in the export dialog? For ...
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72 views

Does a TIFF file using JPEG compression have the same 65535 x 65535 pixel limitation as a JPEG file?

TIFF allows for JPEG compression, among others. While it is not a well-explored option (most people just opt for lossless compression), I am looking to use it as a similar-size alternative to JPEG, ...
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1answer
121 views

Why does zooming into JPEG images show chunky boundaries and or noise resembling smudges of magenta, yellow and cyan?

What causes this effect? The boundaries look chunky and weird. I never seen this on PNG. I also have noticed this for JPEG images only, not PNG. For example these captcha images. The skies don't ...
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1answer
144 views

Wrong DNG colors but correct JPG. How can I “transfer” correct colors to the DNG?

I have a Fimi X8 SE drone and it has a RAW DNG (+ JPG) capture mode. The only downside to this is that the DNG files are somehow "broken" because all colors seems to be wrong. Strong magenta ...
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1answer
137 views

Lightroom: how to not lose quality by exporting a photo from a previously exported photo collection?

I'm thinking to use Lightroom in order to organize catalogues by year (to avoid having large areas of files that I normally have in the cloud and download locally to work them). Having catalogs per ...
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Rating a JPEG in Lightroom Classic 9.2.1 causes the JPEG file date to change to today

I have a full drive of old JPEGs from the early 2000's (Canon A20) that I have added into a LR catalog. I have unchecked the catalog settings "Include Develop settings in metadata inside JPEG, ...
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1answer
110 views

Why do JPEG and TIFF versions of image look different?

I noticed something that probably is good but looks bad in my opinion. I pixel peeped an image to compare the Jpeg vs Tiff. Both are exported with Lightroom from a raw file. I only changed the file ...
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JPG files - different brightness in viewers

I have a single JPG file. If I open it with IrfanView, it is darker than the same file opened in PhotoShop (or in Firefox). What can cause this? The correct version is the one from Photoshop (or ...
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4answers
724 views

Should I convert my family pictures from JPEG to PNG?

I have a lot of family pictures saved in Google Drive as JPEGs - not JPEG 2000 - as they were initially acquired. I thought the problem with JPEGs was artifact at sharp edges, which is not too much ...
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3answers
5k views

Losslessly batch convert many JPEGs to sRGB?

Recently I came across a bunch of weird JPEGs; here's one of them. In Firefox 16.0.2 and ACDSee it looks much more vibrant: However in Internet Explorer 9/MS Paint/Paint.NET 3.5.10 (on Windows 7 64-...
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how to send an edited RAW photo to a lab for processing without it automatically being converted to jpeg & loss of data

How to send an edited RAW photo to a lab for processing without the RAW file automatically being converted to jpeg & loss of data.
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Restoration of a corrupted JPEG file

I wonder if there is any way to restore corrupted JPEG files in my situation. Duting copying of files from camera SDD card I had some kind of problem/mistake with few files, but I was able to repeat ...
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9answers
45k views

How to convert JPEG to RAW in Photoshop or similar?

I am having a competition in which I have to submit images in RAW format. But I have already clicked some images with Nikon D3200 in JPEG.Is there any way to convert JPEG to RAW format in Photoshop or ...
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Does simply opening and closing a JPEG file decrease image quality?

I've had quite a few photography classes, read many photography books, and screened many forums. And I can't find a consistent answer to this question. One "camp" says there is a loss of image quality ...
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3answers
291 views

Looking for a fuzzy image comparison tool (not online, but for harddrive search)

I am looking for a programm, that compares screenshots from documentaries with a (very small) number (around 600) of source screenshots (from the footage they originate from). The differences between ...
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16answers
59k views

Good examples of RAW's advantages over JPEG?

I'm curious to see some real examples of where simply capturing the same photo in RAW (and being processed by someone who can do it justice) has significantly improved the photo at the end of the ...
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4answers
570 views

Are there reasons to NOT use Adobe RGB in JPEG/TIFF files and CIELAB in TIFF files?

Back in the day of 256 color displays. We had web safe colors but today nobody uses 256 color systems. These days people are using either sRGB or Adobe RGB monitors and browsing the net with it. In ...
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136 views

What is this weird JPEG TIFF hybrid image and how can I save it from PS as a normal JPEG?

I have this JPEG image saved out of PS using "Save As" and selecting "JPEG". It's abnormally large for it's WxH resolution Mac Preview's info shows it as an uncompressed TIFF Trying to save it out of ...
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5answers
39k views

Is there a tool to check the file integrity of a series of images?

Sometimes when you're downloading an image and the connection breaks mid stream, you are left with a half downloaded image. If you try to view it you get the upper part of the image and the bottom ...
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2answers
426 views

Is editing metadata of a JPEG destructive to the image?

Is editing metadata of a JPEG destructive to the image? If I edit "File Info" > "Description" in Photoshop, then save.... am I causing the same image degradation as if I edited the image, then re save ...
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1answer
248 views

How to batch convert old NEF photos to JPEG/HEIF with in-camera processing look?

I have ~9k NEF photos from a Nikon D5000 that are currently taking up ~100GB. It's been 8+ years without me touching them, so I don't see a reason to assume I will ever process and edit them. I'd ...
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170 views

Does using M or S size JPEG helps with lowering noise on High ISO?

AFAIK, image sensors use demosaicing algorithms to reconstruct virtual image pixel from different sub-pixels. Does it mean, that on some cameras it could be profitable to use lower-resolution modes to ...
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Are “Windows Photo Viewer” rotations lossless?

Can I rotate lossily compressed photos that I view in Windows Photo Viewer without worrying about losing even more information to compression?
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2k views

How to recover the orginal name of picture file .JPG made by device?

I'm wonder how to recover the original name of picture which was made by device (for example Camera or phone)? Is it possible? Let's say that someone make a photo and then change name of the .JPG file ...
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1answer
372 views

How to compress RAW RGB 10-bit data?

This might seem like a general question, however I could not find an answer for. Specifically, I am using a CMOS image sensor that has the following general capabilities: Array Size: 1280 x 1024 (...
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267 views

Can I fix a corrupted jpeg file?

I have some jpg files on an old hard drive, and it appears they were corrupted somehow. When I try to open them it says it's an invalid file type in Windows. I first attempted a couple of repair ...
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3k views

How does the usual jpeg 0-100 quality settings translate into Photoshop's 0-12 quality setting?

JPEG encoders usually use a quality setting of 0-100, whereas Adobe photo software uses a 0-12 setting. Does anyone know how to convert between these? (I am actually not clear on whether the 0-100 ...
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4answers
2k views

How can modified images be displayed on a Nikon camera?

I made changes to my RAW images in Lightroom and exported them as JPEG to save on an SD card which I inserted into my camera. When I tried to show the pictures to my family and friends, I got the ...
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4answers
5k views

Changing JPEG to RAW to use on Lightroom?

Am I able to covert JPEG into RAW so I can treat the images on Lightroom? Reason why is that for years I am travelling and taking tons of pics but my Nikon was programmed only to save in JPEG format.. ...
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2answers
699 views

Fast, lossy compressed, 10 bit image format (Or 12 bit or 16 bit)

I'm looking for an image format to keep my photo archive. Currently I'm keeping compressed DNG + 80% quality JPG. JPG is useful because you can easily convert and manage, is small and is fast to read/...
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Force Lightroom Classic to write entire image at once during export? (Exporting to network-mounted GCS bucket)

I'm running out of space on my local machine so I've mounted a Google Cloud Storage bucket to my local machine using gcsfuse. I am now exporting my library from Lightroom Classic as JPEG files to the ...
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157 views

How to determine which jpeg is closer to the original image and has the most information?

I've got two jpegs of the same photo of different sizes and attributes. How can I tell if one is the original taken by an iPhone4 or if neither is the original, determine which has the most ...
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611 views

How can I extract the embedded JPEG from a CR2 file? [duplicate]

I'm not interested at converting it, but extracting the thumbnail JPEG.
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1answer
228 views

Best image format by Epson Scanner Software to use for Lightroom

Epson scanner app (for V600) scanner let us scan the image with 6 type of output. See the below table: What's the best format I should use to get maximum editing ability in Lightroom?
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Why are half the files of a JPEG shoot I transferred from my phone to a thumb drive not recognized as JPEGs?

I put a couple hundred pics on this thumb drive and I have no problems accessing any part of the drive. The only problem is all the programs I have for viewing jpegs say that about half of them can't ...
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What is the “optimal” file size of JPEG images with respect to their dimensions?

I plan to write a script that will scan 100,000+ JPEG images and re-compress them if they are "too big" in terms of file size. Scripting is the easy part, but I am not sure how to categorize an image ...
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3answers
5k views

Best program to batch compress JPGs with minimal loss?

My photo catalog is getting bigger and bigger. It's mainly my fault because in my noob years I used to export all JPGs with a 100% quality, point at which files can reach the 10mb mark or even more. I ...
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1answer
41 views

Is it possible to 'fix' an image (with bad colouring/effect applied) based on a smaller thumbnail?

I'm trying to fix some old (as in a few years old, not vintage) images taken by a friend, and have noticed something odd. While most of the pictures appear somewhat over exposed/have strange colours (...
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1answer
231 views

How to save my album as JPEG on Kodak Digi Album Pro?

Objective: Save my album as JPEG on Kodak Digi Album Pro. I am using Kodak Digi Album pro and I'm new to this tool. This program generates a .PAB and .KPL file format, but I want my images to be ...
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6answers
6k views

Fix photo timestamps?

I took a bunch of pictures, and when I loaded them onto my PC, I discovered the time on my camera was set incorrectly. Now this normally wouldn't be a problem...but I am combining pictures from ...

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